Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study - Wilson-Barnes, S. L.; Hunt, J. E. A.; Williams, E. L.; Allison, S. J.; Wild, J. J.; Wainwright, J.; Lanham-New, S. A.; Manders, R. J. F. (Journal of Nutritional Science, 2020)